TR 28.864
Study on Enhancement of the management aspects related to NetWork Data Analytics Functions (NWDAF)
V18.0.1 (Wzip)
2023/06 29 p.
- Rapporteur:
- Mr. Zhao, Song
China Telecom Corporation Ltd.
full Table of Contents for TR 28.864 Word version: 18.0.1
1 Scope
2 References
3 Definitions of terms, symbols and abbreviations
4 Key Issues and potential solutions
5 Conclusions and recommendations
$ Change history
1 Scope p. 7
The present document studies the management enhancement for NWDAF (Network Data Analytics Function).
In the present document, with regarding to the analytic, data management and trained ML model provisioning services provided by the NWDAF, also considering different NWDAF deployment scenarios, some fundamental key issues related the management enhancement for NWDAF are discussed. And the corresponding potential solutions are provided and evaluated.
The present document also provides recommendations for the normative specifications work.
2 References p. 7
3 Definitions of terms, symbols and abbreviations p. 7
4 Key Issues and potential solutions p. 8
4.1 Key Issue #1: NWDAFFunction IOC enhancement to support Multiple NWDAF Deployment p. 8
4.1.1 Description p. 8
4.1.2 Potential requirements p. 8
4.1.3 Potential solutions p. 9
4.1.3.1 Potential solution #1: the attribute for NWDAF capability p. 9
4.1.3.1.1 Introduction p. 9
4.1.3.1.2 Description p. 9
4.1.4 Evaluation p. 9
4.1.5 Conclusion for KI#1 p. 9
4.2 Key Issue #2: NWDAFFunction IOC enhancement to support the logical decomposition of NWDAF p. 10
4.2.1 Description p. 10
4.2.2 Potential requirements p. 10
4.2.3 Potential solutions p. 10
4.2.3.1 Potential solution #1: the attribute for NWDAF logical decomposition p. 10
4.2.3.1.1 Introduction p. 10
4.2.3.1.2 Description p. 10
4.2.4 Evaluation p. 11
4.2.5 Conclusion for KI#2 p. 11
4.3 Key Issue #3: Performance Measurement of the NWDAF on the Interaction Aspect p. 11
4.3.1 Description p. 11
4.3.2 Potential requirements p. 11
4.3.3 Potential solutions p. 12
4.3.3.1 Potential solution #1: number of subscriptions and/or requests p. 12
4.3.3.1.1 Introduction p. 12
4.3.3.1.2 Description p. 12
4.3.3.2 Potential solution #2: number of notifications and/or responses p. 13
4.3.3.2.1 Introduction p. 13
4.3.3.2.2 Description p. 13
4.3.3.3 Potential solution #3: number of subscriptions/requests generated by Aggregator NWDAF p. 14
4.3.3.3.1 Introduction p. 14
4.3.3.3.2 Description p. 14
4.3.3.4 Potential solution #4: number of notifications/responses received by Aggregator NWDAF p. 15
4.3.3.4.1 Introduction p. 15
4.3.3.4.2 Description p. 15
4.3.3.5 Potential solution #5: correctness of service usage p. 16
4.3.3.5.1 Introduction p. 16
4.3.3.5.2 Description p. 16
4.3.3.6 Potential solution #6: number of subscriptions and/or requests received by NWDAF supporting ML model provision services p. 16
4.3.3.6.1 Introduction p. 16
4.3.3.6.2 Description p. 17
4.3.3.7 Potential solution #7: number of notifications and/or responses generated by NWDAF supporting ML model provision services p. 17
4.3.3.7.1 Introduction p. 17
4.3.3.7.2 Description p. 17
4.3.4 Evaluation p. 18
4.3.5 Conclusion for KI#3 p. 18
4.4 Key Issue #4: Performance Measurement for NWDAF Data Collection p. 19
4.4.1 Description p. 19
4.4.2 Potential requirements p. 19
4.4.3 Potential solutions p. 20
4.4.3.1 Potential solution #1: number of subscriptions for NWDAF Data Collection p. 20
4.4.3.1.1 Introduction p. 20
4.4.3.1.2 Description p. 20
4.4.3.2 Potential solution #2: number of notifications for NWDAF Data Collection p. 20
4.4.3.2.1 Introduction p. 20
4.4.3.2.2 Description p. 20
4.4.4 Evaluation p. 21
4.4.5 Conclusion for KI#4 p. 21
4.5 Key Issue #5: Performance Measurement on Data Collection Exposed by NWDAF p. 21
4.5.1 Description p. 21
4.5.2 Potential requirements p. 22
4.5.3 Potential solutions p. 22
4.5.3.1 Potential solution #1: number of Nnwdaf_DataManagement service subscriptions and/or requests p. 22
4.5.3.1.1 Introduction p. 22
4.5.3.1.2 Description p. 22
4.5.3.2 Potential solution #2: number of Nnwdaf_DataManagement service notifications and/or responses p. 22
4.5.3.2.1 Introduction p. 22
4.5.3.2.2 Description p. 23
4.5.4 Evaluation p. 23
4.5.5 Conclusion for KI#5 p. 23
4.6 Key Issue #6: Performance measurement of the NWDAF related to the analytics result generation p. 23
4.6.1 Description p. 23
4.6.2 Potential requirements p. 24
4.6.3 Potential solutions p. 24
4.6.3.1 Potential solution #1: time consumption of NWDAF generating analytics result p. 24
4.6.3.1.1 Introduction p. 24
4.6.3.1.2 Description p. 24
4.6.4 Evaluation p. 24
4.6.5 Conclusion for KI#6 p. 25
4.7 Key Issue #7: Performance Management of the NWDAF Analytics-related Timing p. 25
4.7.1 Description p. 25
4.7.2 Potential requirements p. 25
4.7.3 Potential solutions p. 26
4.7.3.1 Potential solution #1: the number of events/scenarios for which all the times are appropriately configured p. 26
4.7.3.1.1 Introduction p. 26
4.7.3.1.2 Description p. 26
4.7.3.2 Potential solution #2: the number of events/scenarios for which the analytics is delivered after the supported delay but before the deadline p. 26
4.7.3.2.1 Introduction p. 26
4.7.3.2.2 Description p. 27
4.7.3.3 Potential solution #3: the number of events/scenarios for which analytics computation is too late p. 27
4.7.3.3.1 Introduction p. 27
4.7.3.3.2 Description p. 27
4.7.3.4 Potential solution #4 p. 27
4.7.4 Evaluation p. 28
4.7.5 Conclusion for KI#7 p. 28
5 Conclusions and recommendations p. 28
$ Change history p. 29
